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Simon Marchi 2b79f3761c Remove some variables in favor of using gdb::optional
While reading that code, I noticed that some variables essentially meant
whether to consider some other variable or not.  I think using
gdb::optional (which was not available when this code was written) is
clearer, as it embeds the used/not used predicate directly in the type
of the variable, making it harder to miss.

gdb/ChangeLog:

	* dwarf2read.c (struct dw2_symtab_iterator):
	<want_specific_block>: Remove.
	<block_index>: Change type to gdb::optional.
	(dw2_symtab_iter_init): Remove WANT_SPECIFIC_BLOCK parameter,
	change type of BLOCK_INDEX parameter to gdb::optional.
	(dw2_symtab_iter_next): Re-write in function of gdb::optional.
	(dw2_lookup_symbol): Don't pass argument for
	WANT_SPECIFIC_BLOCK.
	(dw2_expand_symtabs_for_function): Don't pass argument for
	WANT_SPECIFIC_BLOCK, pass empty optional for BLOCK_INDEX.
	(class dw2_debug_names_iterator)
	<dw2_debug_names_iterator>: Remove WANT_SPECIFIC_BLOCK
	parameter, change BLOCK_INDEX type to gdb::optional.
	<m_want_specific_block>: Remove.
	<m_block_index>: Change type to gdb::optional.
	(dw2_debug_names_iterator::next): Change type of IS_STATIC to
	gdb::optional.  Re-write in function of gdb::optional.
	(dw2_debug_names_lookup_symbol): Don't pass argument for
	WANT_SPECIFIC_BLOCK.
	(dw2_debug_names_expand_symtabs_for_function): Don't pass
	argument for WANT_SPECIFIC_BLOCK, pass empty optional for
	BLOCK_INDEX.
2019-08-04 22:44:05 -04:00
bfd Automatic date update in version.in 2019-08-05 00:00:29 +00:00
binutils PR24871, readelf segv in dump_ia64_unwind 2019-08-02 12:42:02 +09:30
config
contrib
cpu cpu,opcodes,gas: use %r0 and %r6 instead of %a and %ctf in eBPF disassembler 2019-07-19 15:35:43 +02:00
elfcpp [GOLD] PowerPC64 pc-relative TLS support 2019-08-02 18:41:34 +09:30
etc
gas RISC-V: Fix minor issues with FP csr instructions. 2019-07-30 14:42:16 -07:00
gdb Remove some variables in favor of using gdb::optional 2019-08-04 22:44:05 -04:00
gnulib
gold [GOLD] PowerPC64 pc-relative TLS support 2019-08-02 18:41:34 +09:30
gprof
include
intl
ld PowerPC tlsie test fix 2019-08-02 12:41:05 +09:30
libctf libctf: introduce ctf_func_type_{info,args}, ctf_type_aname_raw 2019-07-18 20:53:57 +01:00
libdecnumber
libiberty
opcodes RISC-V: Fix minor issues with FP csr instructions. 2019-07-30 14:42:16 -07:00
readline [readline] Fix heap-buffer-overflow in update_line 2019-07-12 09:53:02 +02:00
sim
texinfo
zlib Merge config/ changes from GCC. 2018-10-31 17:16:41 +00:00
.cvsignore
.gitattributes
.gitignore
ar-lib
ChangeLog
compile
config-ml.in
config.guess config.guess,config.sub: synchronize with config project master sources 2019-05-23 18:19:56 +02:00
config.rpath Remove freebsd1 from libtool.m4 macros and config.rpath. 2011-02-13 21:00:14 +00:00
config.sub
configure Move gnulib to top level 2019-06-14 12:40:02 -06:00
configure.ac
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
depcomp
djunpack.bat * djunpack.bat: Use ".." quoting in Sed command, for the sake of 2009-03-27 13:37:09 +00:00
install-sh Update from upstream Automake 2014-11-16 13:43:48 +01:00
libtool.m4
lt~obsolete.m4
ltgcc.m4
ltmain.sh PR target/59788 2014-02-06 11:01:57 +01:00
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS
Makefile.def
Makefile.in
Makefile.tpl Revert "Sync top level files with versions from gcc." 2019-05-30 11:17:19 +01:00
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
multilib.am
README
README-maintainer-mode
setup.com
src-release.sh
symlink-tree 2005-07-14 Kelley Cook <kcook@gcc.gnu.org> 2005-07-14 01:24:56 +00:00
test-driver
ylwrap

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.